# Copyright 2017 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Common functions for docker library"""

def docker_path(toolchain_info):
    """Resolve the user-supplied docker path, if any.

    Args:
       toolchain_info: The DockerToolchainInfo

    Returns:
       Path to docker
    """
    if toolchain_info.tool_target:
        return toolchain_info.tool_target.files_to_run.executable.path
    else:
        return toolchain_info.tool_path
